Month	Percent
1978-01-01	6.4900
1978-02-01	5.7000
1978-03-01	5.9800
1978-04-01	5.4400
1978-05-01	7.0300
1978-06-01	9.1800
1978-07-01	10.3100
1978-08-01	8.4500
1978-09-01	8.2300
1978-10-01	8.7300
1978-11-01	10.2700
1978-12-01	11.0000
1979-01-01	11.1200
1979-02-01	12.5600
1979-03-01	12.4600
1979-04-01	11.4600
1979-05-01	11.5000
1979-06-01	11.7300
1979-07-01	13.4300
1979-08-01	13.5800
1979-09-01	13.2900
1979-10-01	13.2600
1979-11-01	13.2100
1979-12-01	15.5800
1980-01-01	17.1000
1980-02-01	17.4100
1980-03-01	17.1900
1980-04-01	16.9200
1980-05-01	17.0100
1980-06-01	18.3200
1980-07-01	17.6700
1980-08-01	16.3600
1980-09-01	16.3200
1980-10-01	17.3400
1980-11-01	15.2900
1980-12-01	13.8300
1981-01-01	13.9000
1981-02-01	14.1300
1981-03-01	14.2800
1981-04-01	11.6900
1981-05-01	11.1600
1981-06-01	10.3200
1981-07-01	11.9300
1981-08-01	12.6000
1981-09-01	13.1200
1981-10-01	15.9900
1981-11-01	15.6400
1981-12-01	13.5500
1982-01-01	14.2300
1982-02-01	14.3000
1982-03-01	13.8100
1982-04-01	12.4000
1982-05-01	13.1300
1982-06-01	12.8400
1982-07-01	12.6800
1982-08-01	11.6300
1982-09-01	11.0000
1982-10-01	10.4300
1982-11-01	9.3700
1982-12-01	10.7100
1983-01-01	11.0800
1983-02-01	11.3400
1983-03-01	11.0500
1983-04-01	10.5700
1983-05-01	10.3400
1983-06-01	9.8300
1983-07-01	9.2300
1983-08-01	9.2200
1983-09-01	9.8100
1983-10-01	9.1600
1983-11-01	9.0400
1983-12-01	8.9900
1984-01-01	9.1400
1984-02-01	9.2400
1984-03-01	9.0600
1984-04-01	8.5300
1984-05-01	7.3500
1984-06-01	8.5600
1984-07-01	11.2800
1984-08-01	11.5400
1984-09-01	10.5600
1984-10-01	10.5700
1984-11-01	10.1700
1984-12-01	9.1900
1985-01-01	11.0900
1985-02-01	14.0500
1985-03-01	14.6000
1985-04-01	13.3000
1985-05-01	12.6800
1985-06-01	12.7200
1985-07-01	12.6600
1985-08-01	11.9400
1985-09-01	11.5700
1985-10-01	11.7200
1985-11-01	11.6300
1985-12-01	11.5000
1986-01-01	11.5000
1986-02-01	12.5600
1986-03-01	12.7500
1986-04-01	11.4300
1986-05-01	10.5600
1986-06-01	10.2700
1986-07-01	10.0800
1986-08-01	10.0000
1986-09-01	9.3800
1986-10-01	9.8800
1986-11-01	10.5600
1986-12-01	10.8300
1987-01-01	11.0300
1987-02-01	11.0900
1987-03-01	10.7900
1987-04-01	9.8600
1987-05-01	8.8700
1987-06-01	9.0000
1987-07-01	8.8000
1987-08-01	9.0200
1987-09-01	9.6200
1987-10-01	9.6200
1987-11-01	9.1300
1987-12-01	8.5100
1988-01-01	8.0700
1988-02-01	8.2000
1988-03-01	8.5000
1988-04-01	8.0400
1988-05-01	7.2400
1988-06-01	6.8800
1988-07-01	9.2100
1988-08-01	10.2600
1988-09-01	10.6000
1988-10-01	11.7500
1988-11-01	11.8300
1988-12-01	12.5700
1989-01-01	12.9800
1989-02-01	12.5100
1989-03-01	12.5800
1989-04-01	11.3200
1989-05-01	12.4800
1989-06-01	13.0100
1989-07-01	13.8800
1989-08-01	13.8500
1989-09-01	13.8300
1989-10-01	14.7800
1989-11-01	14.8600
1989-12-01	14.9800
1990-01-01	14.9100
1990-02-01	14.8600
1990-03-01	14.8200
1990-04-01	14.8300
1990-05-01	14.9300
1990-06-01	14.7600
1990-07-01	14.9100
1990-08-01	14.9300
1990-09-01	14.8700
1990-10-01	14.1300
1990-11-01	14.4500
1990-12-01	14.3500
1991-01-01	14.0200
1991-02-01	14.0000
1991-03-01	13.4500
1991-04-01	12.0400
1991-05-01	12.1800
1991-06-01	11.6300
1991-07-01	11.3500
1991-08-01	10.9600
1991-09-01	10.6600
1991-10-01	10.5600
1991-11-01	10.4500
1991-12-01	10.7200
1992-01-01	10.6100
1992-02-01	10.6200
1992-03-01	10.4100
1992-04-01	10.2000
1992-05-01	9.9100
1992-06-01	9.9300
1992-07-01	9.9800
1992-08-01	9.6800
1992-09-01	9.9400
1992-10-01	9.6500
1992-11-01	7.6100
1992-12-01	6.8200
1993-01-01	6.9200
1993-02-01	5.8800
1993-03-01	6.0000
1993-04-01	5.9000
1993-05-01	5.6400
1993-06-01	5.7900
1993-07-01	6.0200
1993-08-01	5.7600
1993-09-01	6.1000
1993-10-01	5.7100
1993-11-01	5.7100
1993-12-01	5.8800
1994-01-01	5.4700
1994-02-01	5.0700
1994-03-01	5.2400
1994-04-01	4.8400
1994-05-01	4.8000
1994-06-01	4.7700
1994-07-01	4.9700
1994-08-01	4.7200
1994-09-01	4.8300
1994-10-01	5.3800
1994-11-01	5.1300
1994-12-01	5.4400
1995-01-01	5.8200
1995-02-01	6.1200
1995-03-01	5.8300
1995-04-01	5.6900
1995-05-01	5.8800
1995-06-01	6.3000
1995-07-01	6.6300
1995-08-01	6.5700
1995-09-01	6.7000
1995-10-01	6.6200
1995-11-01	6.8400
1995-12-01	6.6900
1996-01-01	6.4400
1996-02-01	6.3200
1996-03-01	6.0800
1996-04-01	5.9600
1996-05-01	6.0100
1996-06-01	5.7800
1996-07-01	5.7600
1996-08-01	5.7200
1996-09-01	5.7300
1996-10-01	5.7700
1996-11-01	5.8600
1996-12-01	5.8300
1997-01-01	5.9005
1997-02-01	5.9850
1997-03-01	5.9651
1997-04-01	5.9618
1997-05-01	6.2154
1997-06-01	6.2227
1997-07-01	6.5192
1997-08-01	6.9488
1997-09-01	6.9772
1997-10-01	7.1462
1997-11-01	7.2269
1997-12-01	7.1379
1998-01-01	7.2679
1998-02-01	7.3406
1998-03-01	7.4033
1998-04-01	7.2519
1998-05-01	7.2596
1998-06-01	7.1409
1998-07-01	7.3283
1998-08-01	7.5309
1998-09-01	7.2790
1998-10-01	7.5534
1998-11-01	6.8577
1998-12-01	6.3750
1999-01-01	5.9922
1999-02-01	5.7693
1999-03-01	5.5665
1999-04-01	5.3295
1999-05-01	5.2689
1999-06-01	4.8972
1999-07-01	4.9970
1999-08-01	4.8419
1999-09-01	4.9190
1999-10-01	5.0623
1999-11-01	5.2513
1999-12-01	4.7814
2000-01-01	5.3527
2000-02-01	5.8408
2000-03-01	5.7620
2000-04-01	5.9347
2000-05-01	5.9122
2000-06-01	5.9032
2000-07-01	5.9867
2000-08-01	5.8846
2000-09-01	6.1259
2000-10-01	5.8135
2000-11-01	5.9811
2000-12-01	5.7383
2001-01-01	5.9208
2001-02-01	5.8447
2001-03-01	5.4017
2001-04-01	5.3159
2001-05-01	5.5203
2001-06-01	4.7796
2001-07-01	5.2943
2001-08-01	4.8046
2001-09-01	4.8526
2001-10-01	4.5973
2001-11-01	3.5761
2001-12-01	4.5841
2002-01-01	3.7685
2002-02-01	4.0574
2002-03-01	4.0431
2002-04-01	3.7520
2002-05-01	3.9273
2002-06-01	3.5006
2002-07-01	3.8610
2002-08-01	4.1371
2002-09-01	3.8711
2002-10-01	4.0884
2002-11-01	3.6521
2002-12-01	4.3953
2003-01-01	3.8044
2003-02-01	3.7243
2003-03-01	3.9196
2003-04-01	3.6190
2003-05-01	3.6875
2003-06-01	3.6535
2003-07-01	3.2923
2003-08-01	3.5053
2003-09-01	3.5179
2003-10-01	3.3550
2003-11-01	3.5483
2003-12-01	3.7778
2004-01-01	3.7159
2004-02-01	4.0873
2004-03-01	3.9040
2004-04-01	3.8914
2004-05-01	4.2030
2004-06-01	4.3628
2004-07-01	4.4623
2004-08-01	4.6300
2004-09-01	4.7314
2004-10-01	4.7297
2004-11-01	4.7408
2004-12-01	4.7618
2005-01-01	4.7599
2005-02-01	4.8160
2005-03-01	4.7618
2005-04-01	4.8125
2005-05-01	4.7079
2005-06-01	4.7935
2005-07-01	4.7546
2005-08-01	4.5775
2005-09-01	4.5499
2005-10-01	4.4246
2005-11-01	4.5458
2005-12-01	4.6381
2006-01-01	4.4829
2006-02-01	4.4255
2006-03-01	4.5402
2006-04-01	4.4928
2006-05-01	4.5093
2006-06-01	4.5712
2006-07-01	4.5459
2006-08-01	4.8026
2006-09-01	4.7892
2006-10-01	4.8255
2006-11-01	4.9968
2006-12-01	5.0844
2007-01-01	5.2231
2007-02-01	5.3183
2007-03-01	5.3032
2007-04-01	5.2915
2007-05-01	5.4778
2007-06-01	5.6093
2007-07-01	5.8434
2007-08-01	5.9127
2007-09-01	5.8246
2007-10-01	5.7751
2007-11-01	5.7892
2007-12-01	5.5964
2008-01-01	5.5049
2008-02-01	5.3322
2008-03-01	5.3078
2008-04-01	5.0800
2008-05-01	5.0314
2008-06-01	5.0326
2008-07-01	5.0099
2008-08-01	4.9970
2008-09-01	4.8925
2008-10-01	4.4115
2008-11-01	2.7846
2008-12-01	1.6525
2009-01-01	1.3260
2009-02-01	0.8973
2009-03-01	0.5224
2009-04-01	0.4099
2009-05-01	0.4133
2009-06-01	0.4158
2009-07-01	0.4173
2009-08-01	0.4220
2009-09-01	0.4302
2009-10-01	0.4472
2009-11-01	0.4509
2009-12-01	0.4492
2010-01-01	0.4545
2010-02-01	0.4672
2010-03-01	0.4713
2010-04-01	0.4726
2010-05-01	0.4842
2010-06-01	0.4870
2010-07-01	0.4900
2010-08-01	0.4910
2010-09-01	0.5010
2010-10-01	0.5083
2010-11-01	0.5086
2010-12-01	0.5173
2011-01-01	0.5059
2011-02-01	0.5084
2011-03-01	0.5154
2011-04-01	0.5240
2011-05-01	0.5217
2011-06-01	0.5311
2011-07-01	0.5228
2011-08-01	0.5380
2011-09-01	0.5486
2011-10-01	0.5358
2011-11-01	0.5347
2011-12-01	0.5201
2012-01-01	0.5157
2012-02-01	0.4993
2012-03-01	0.4900
2012-04-01	0.4861
2012-05-01	0.4848
2012-06-01	0.4859
2012-07-01	0.4646
2012-08-01	0.4500
2012-09-01	0.4271
2012-10-01	0.4334
2012-11-01	0.4256
2012-12-01	0.4309
2013-01-01	0.4097
2013-02-01	0.4261
2013-03-01	0.4353
2013-04-01	0.4396
2013-05-01	0.4336
2013-06-01	0.4252
2013-07-01	0.4301
2013-08-01	0.4270
2013-09-01	0.4299
2013-10-01	0.4313
2013-11-01	0.4300
2013-12-01	0.4215
2014-01-01	0.4287
2014-02-01	0.4197
2014-03-01	0.4159
2014-04-01	0.4220
2014-05-01	0.4233
2014-06-01	0.4251
2014-07-01	0.4283
2014-08-01	0.4228
2014-09-01	0.4319
2014-10-01	0.4308
2014-11-01	0.4325
2014-12-01	0.4280
2015-01-01	0.4355
2015-02-01	0.4511
2015-03-01	0.4568
2015-04-01	0.4574
2015-05-01	0.4620
2015-06-01	0.4566
2015-07-01	0.4549
2015-08-01	0.4590
2015-09-01	0.4544
2015-10-01	0.4622
2015-11-01	0.4636
2015-12-01	0.4575
2016-01-01	0.4659
2016-02-01	0.4657
2016-03-01	0.4646
2016-04-01	0.4663
2016-05-01	0.4633
2016-06-01	0.4598
2016-07-01	0.4577
2016-08-01	0.2478
2016-09-01	0.2130
2016-10-01	0.2120
2016-11-01	0.2108
2016-12-01	0.2125
2017-01-01	0.2135
2017-02-01	0.2106
2017-03-01	0.2095
2017-04-01	0.2114
2017-05-01	0.2126
2017-06-01	0.2121
2017-07-01	0.2124
2017-08-01	0.2132
2017-09-01	0.2123
2017-10-01	0.2110
2017-11-01	0.4493
2017-12-01	0.4619
2018-01-01	0.4631
2018-02-01	0.4634
2018-03-01	0.4637
2018-04-01	0.4617
2018-05-01	0.4529
2018-06-01	0.4507
2018-07-01	0.4545
2018-08-01	0.6911
2018-09-01	0.7012
2018-10-01	0.7011